Justin Bieber Goes From Scrawny to Brawny

Remember that sweet little guy that worked his way into millions of hearts years ago with his song “Baby”? Well, Justin Bieber’s all grown up. Now he’s a hit-making, world-touring act. But wait, that’s not the only way the Biebs has changed. There’s been a physical shift as well, and not just the basic things that happen to everyone. Recently its become more and more obvious (thanks to his selfies) that the muscles on Justin Bieber have gone from nonexistent ones to no damn jokes. He’s hitting the weights hard and wasting no time in showing them off. Take a look at how far Justin’s come.

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Running at Whale Beach, Sydney back o...

Running at Whale Beach, Sydney back on April 24, 2010, the 16-year-old star looks more like an active kid than a gym rat.

Islandpaps/Splash

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Out in Barbados, Justin Bieber tries ...

Out in Barbados, Justin Bieber tries his hand at boogie-boarding on August 18, 2010. It’s a workout, but not the kind stuff he’d get into later for the big guns.

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At 17 here, the Biebs still looks lik...

At 17 here, the Biebs still looks like he’s a few burgers away from putting some real meat of his bones. But taking a walk in Hawaii on May 26, 2011, it looks like he’s heading in the right direction.

Clasos.com/Splash News

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Just a few months shy of turning 18,...

Just a few months shy of turning 18, Justin strolls along the beaches of Los Cabos, Mexico on Jan 7, 2012. Clearly getting taller, he’s stretched out a bit—meaning? You guessed it: he’s going to pack in some more carbs to fill out that frame.

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Last winter, at 18, Bieber decided to...

Last winter, at 18, Bieber decided to quit playing and hit the gym. As a result, he looks as strong as ever on this November day.

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Even while cooling out during vacatio...

Even while cooling out during vacation time on December 30, 2012 and soaking up the rays, Justin’s abs are defined here. The hard work’s paying off.

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Weeks before turning 19, Justin’s f...

Weeks before turning 19, Justin’s fully aware he’s crossing over into ripped territory. Here, at “Saturday Night Live” on February 9, 2013, he flashes some pack to let everyone know what he’s working with.

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Six days after his 19th birthday, Jus...

Six days after his 19th birthday, Justin kicked back after fainting on March 7, 2013. He’d been working hard. Clearly, he’s okay shape, though.

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Backstage at his “Believe” concer...

Backstage at his “Believe” concert on July 1, 2013, Justin looks more like Marky Mark than that sweet little Canadian singer he came into the industry as. He’s beefed up quite a bit.

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With some new tats and a gold rope re...

With some new tats and a gold rope resting on his inflated chest, Bieber smiles for the camera on September 3, 2013.

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Tan lines don’t exist when your shi...

Tan lines don’t exist when your shirt is off as much as Justin’s is. Whether at the beach or on stage, like he is here on October 3, 2013, Justin’s buffed up new bod’ will not be denied of opportunities to flourish.

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Justin’s not done getting big yet. ...

Justin’s not done getting big yet. On October 8, 2013 he Instagrammed this pic’ of him pointing (while flexing) at his trainer.